Science Friday Folgen

The origin of life on Earth has been mulled over by scientists for centuries. We now know that life’s building blocks are RNA, amino acids, and cells. But if life originated from the primordial ooze of early Earth, could that process be unfolding elsewhere in the universe?The search for life elsewhere in the universe is at the center of the book Is Earth Exceptional?: The Quest for Cosmic Life, by Mario Livio and Jack Szostak. Dr. Livio, an astrophysicist previously with the Space Telescope Science Institute, which operates the Hubble Space Telescope, joins Ira to talk about the possibilities of life beyond Earth, and where we would most likely find it.Read an excerpt of Is Earth Exceptional?: The Quest for Cosmic Life.Transcript for this segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

The storm flooded mines in Spruce Pine, North Carolina, which supply the tech industry with some of the purest quartz in the world. Also, researchers developed a 3D-printable material, inspired by worms, that can act as a Band-Aid for damaged heart and cartilage tissue.Hurricane Helene’s Damage Could Affect The Global Tech IndustryAfter making landfall on September 26, Hurricane Helene devastated regions in the southeastern US. Over 200 people are confirmed dead so far. About a million people are still without power, and many lack clean water.As climate change intensifies, hurricanes like Helene are expected to occur more often and be more intense. What’s become very clear in the last few years is that due to the interconnectedness of the modern world, extreme weather in one place can have global implications.For example, Spruce Pine, North Carolina, home to around 2,200 people, flooded during Hurricane Helene. The town is also home to several mines that produce some of the world’s purest quartz, an ingredient necessary to make solar panels, smartphones, semiconductors, and more.Ira talks with Umair Irfan, senior correspondent at Vox, about this and other science news of the week, including a completed map of a fruit fly’s brain, how scientists in the United Kingdom are screening newborns for rare diseases, and how octopuses and fish are hunting as a team.A Strong, Stretchy, And Sticky Band-Aid For The HeartThe heart is an impressive organ that has to beat constantly for years. But what happens when heart tissue is damaged? Or when cartilage in joints like our knees wears out? These constantly moving tissues don’t regenerate easily, and there aren’t a lot of great treatment options.To address these kinds of problems, a team at University of Colorado Boulder invented a new strong, stretchy, and sticky hydrogel material that could act as a Band-Aid to heart or tissue lesions. They were inspired by masses of worms that tangle and untangle themselves, behaving almost as both a solid and liquid. The team was able to replicate that in a molecular structure with the help of a new 3D-printing technique. And it could have applications far beyond medicine, including for manufacturing and improving the 3D-printing process itself. Their research was published in the journal Science, and their lab has filed for a provisional patent for the material.Dr. Jason Burdick, professor of chemical and biological engineering at CU Boulder’s BioFrontiers Institute, joins Ira Flatow to talk about the new material and how it could improve future tissue and cartilage treatment.Transcripts for each segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.

This summer, the Bureau of Land Management approved seven herbicides to fight invasive plants in the West. Also, when scientists analyzed the swirls in the famous painting, they found Van Gogh depicted forces of nature with startling accuracy.What Newly Approved Herbicides Could Mean For Federal LandInvasive plants are a big problem across the western US.Cunning interlopers like cheatgrass, leafy spurge and red brome can outcompete native vegetation, crowd habitats and steal water and other vital soil nutrients.Of the 245 million acres controlled by the Bureau of Land Management, harmful non-native plants have already infested 79 million acres—an area larger than the states of Pennsylvania, Virginia and South Carolina combined. That’s why the federal agency felt the urgency to approve seven new herbicides to kill invasives on its land nationwide, said Seth Flanigan, a BLM senior invasive species specialist based in Idaho.“If we don’t remove this now, what is it going to look like 10 years from now?” he said.Read the rest of this article on sciencefriday.com.The Hidden Physics In Van Gogh’s ‘The Starry Night’One of Vincent Van Gogh’s most famous creations is “The Starry Night,” an oil painting of a quaint French village at night with a blue night sky that dramatically swirls around the yellow stars and moon.It’s easy to admire this painting as a casual viewer, but if you research fluid dynamics, one thing in particular stands out: those iconic swirls in the sky. To a physicist, they look an awful lot like the swirls that atmospheric turbulence produces. And some researchers have been wondering if Van Gogh’s swirls actually match the mathematical models of turbulence theory.Well, a team of researchers from China and France set out to analyze all the swirls in “The Starry Night,” and it turns out that Van Gogh had a knack for depicting the forces of nature. Their results were published in the journal Physics Of Fluid.Guest host Anna Rothschild sits down with Dr. Francois Schmitt, research professor in physics at the French National Centre for Scientific Research and co-author of the recent study, to talk about the hidden physics in this famous painting.Transcripts for each segment will be available after the show airs on sciencefriday.com. Subscribe to this podcast. Plus, to stay updated on all things science, sign up for Science Friday's newsletters.